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WO2007015777A1 - Procédé et appareil d’acquisition des données de radiation - Google Patents

Procédé et appareil d’acquisition des données de radiation Download PDF

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Publication number
WO2007015777A1
WO2007015777A1 PCT/US2006/027533 US2006027533W WO2007015777A1 WO 2007015777 A1 WO2007015777 A1 WO 2007015777A1 US 2006027533 W US2006027533 W US 2006027533W WO 2007015777 A1 WO2007015777 A1 WO 2007015777A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
events
detector
counter
radiation events
Prior art date
Application number
PCT/US2006/027533
Other languages
English (en)
Inventor
Yaron Hefetz
Herman Altman
Original Assignee
Ge Medical Systems Isreal, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ge Medical Systems Isreal, Ltd. filed Critical Ge Medical Systems Isreal, Ltd.
Priority to JP2008523936A priority Critical patent/JP4904349B2/ja
Priority to DE112006001859T priority patent/DE112006001859T5/de
Publication of WO2007015777A1 publication Critical patent/WO2007015777A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/17—Circuit arrangements not adapted to a particular type of detector
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
    • A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
    • A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
    • A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/027—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/508—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for non-human patients

Definitions

  • FIG. 1 is a schematic illustration of an imaging system in accordance with an embodiment of the present invention.
  • FIG. 6 illustrates a method for counting valid radiation events based on the pulse duration T in accordance with an embodiment of the present invention.
  • the threshold analyzer 128 analyses the event energy of the amplified signal 126.
  • X-ray energy depending upon the setting of the HV generator 74 may range from 20 to 120 keV.
  • NM imaging one or more isotopes may be used having a value within the range of 65 to 650 keV.
  • NM gamma events occur at low rates. Each NM event is scrutinized carefully, preferably at the host computer, such as at the work station 68. To achieve this end, the signal is usually digitized and digital processing, such as energy correction, is performed on the result.
  • the first and second counters 132 and 136 and the ADC 168 output data to a multiplexer 140 over lines 174, 175 and 176.
  • the multiplexer 140 may then output the data to the readout bus 146.
  • one or more buffers 172 may receive and hold data from the multiplexer 140 prior to outputting the data to the readout bus 146.
  • the buffer 172 may hold data until the readout bus 146 is available. It should be understood that the buffer 172 may also be used within the detectors 100 and 152 previously discussed in FIGS. 2 and 7. It is clear to a person skilled in the art that a plurality of separate buses may be used for data output over the lines 174, 175 or 176.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Measurement Of Radiation (AREA)
  • Nuclear Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

L’invention concerne un procédé et un appareil de détection et d’acquisition de données de radiation consistant à détecter des événements de radiation avec un détecteur multimodalité. Le détecteur comprend des cristaux à semi-conducteur formant une matrice de pixels que l’on peut disposer en rangées et en colonnes, et possède un champ de détection de radiation permettant de détecter des événements de radiation. Les événements de radiation pour chaque pixel sont comptés par un module électronique fixé à chaque pixel. Le module électronique comprend un analyseur de seuil permettant d’analyser les événements de radiation. L’analyseur de seuil identifie des événements valides en comparant un niveau d’énergie associé aux événements de radiation avec un seuil prédéterminé. Le module électronique comprend en outre au moins un premier compteur pour compter les événements valides.
PCT/US2006/027533 2005-07-26 2006-07-13 Procédé et appareil d’acquisition des données de radiation WO2007015777A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008523936A JP4904349B2 (ja) 2005-07-26 2006-07-13 放射線データを取得する検出器およびシステム
DE112006001859T DE112006001859T5 (de) 2005-07-26 2006-07-13 Verfahren und Gerät zur Erfassung von Strahlungsdaten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/189,451 US7332724B2 (en) 2005-07-26 2005-07-26 Method and apparatus for acquiring radiation data
US11/189,451 2005-07-26

Publications (1)

Publication Number Publication Date
WO2007015777A1 true WO2007015777A1 (fr) 2007-02-08

Family

ID=37440555

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/027533 WO2007015777A1 (fr) 2005-07-26 2006-07-13 Procédé et appareil d’acquisition des données de radiation

Country Status (4)

Country Link
US (1) US7332724B2 (fr)
JP (1) JP4904349B2 (fr)
DE (1) DE112006001859T5 (fr)
WO (1) WO2007015777A1 (fr)

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JP2008246206A (ja) * 2007-03-27 2008-10-16 General Electric Co <Ge> 半導体式の光電子増倍器及びシンチレータを用いたフォトン計数ｃｔ検出器
WO2010035671A1 (fr) * 2008-09-24 2010-04-01 株式会社 東芝 Détecteur de rayons x
JP2011508201A (ja) * 2007-12-20 2011-03-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 計数型の一体化検知器

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JP2011508201A (ja) * 2007-12-20 2011-03-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 計数型の一体化検知器
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Also Published As

Publication number Publication date
JP2009503505A (ja) 2009-01-29
DE112006001859T5 (de) 2008-05-29
US7332724B2 (en) 2008-02-19
US20070023669A1 (en) 2007-02-01
JP4904349B2 (ja) 2012-03-28

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